Machinery for propelling and steering boats



(No Model.)

S. E. HARTHAN.

MACHINERY POR PEOPELLING AND STEERING BOATS.

Patented July 19, 1887'.

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UNITED STATES PATENT GEEICE.

S. EMERSON HARTHAN, OF TCBC/ESTER, MASSACHUSETTS.

MACHINERY FOR PROPELLING AND STEERING BOATS.

SPECIFICATION forming part of Letters Patent No. 366,662, dated July 19, 1887.

Application filed November 2li, 1886. Serial No. 910,593.

To all whom it' may conce/121:

Be it known that l, S. EMERsoN I-IARTHAN, a citizen of the 'United States, residing at Vorcester, in the county of Worcester and State of Massachusetts, have invented certain new and useful Improvements in Machinery for- Iropelling and Steering Boats, of which the following, together with the accompanying drawings, is a specification sufficiently full, clear, and exact to enable persons skilled in the art to which this invention appertains t0 make and use the same.

The objects ot' my present invention are, first, to provide an engine and propelling apparatus for boats, which apparatus can be connected to and disconnected from the boat for temporary use at pleasure, and which is light and portable and can be applied to rowboats of ordinary construction without defacing or making change in the construction of the boat; second, to provide an auxiliary stern-post carrying an engine, propeller, and steering mechanism, disposed and operating as hereinafter described, and having means for its detachable connection with the stern of the-boat, third, to provide a tubular steering-rudder adapted to serve as a condenser for the propelling-engine of a boat or other vessel, in combination with a pumping mechanism for removing the water of condensation from the interior of said rudder; fourth, to provide, in combination with the propeller, condenser, and engine, a simple and etlicient pumping apparatus and 'feed-water heater, as hereinafter described, for returning the water of condensation; fifth, to provide convenient facilities for storage of fuel, and to render the apparatus complete in its efficiency and simple and compact in its construction and form. These objects I attain by mechan ism the nature and operation of which is illus trated in the drawings, and hereinafter explained.

The several features of my invention will be understood from the following description, the particular subjectmatter claimed being hereinafter definitely specified.

In the drawings, Figure l is a side view of a portable engine and propeller apparatus, illustrating the features ot' my invention. Fig. 2 is a rear view of the same. Fig. 3 is a ver- (No model.)

tical section through the engine, valves, con denser, and pumping devices.

in referring to parts, A denotes a frame or auxiliary stern-post adapted to occupy a position against the stern ofthe boat B (illustrated piston-rod D of said engine being connected direct by the pitman D2 with a crank or wrist pin fixed to the propeller-wheel, as indicated at c. The reciprocating cross-head d of the engine works in guides a on the frame A.

lhe engine-valve E is made substantially as indicated in Fig. 3, and is arranged to reciprocate in the valve-box E', into which steam is admitted above and below the valve-slides. Said valve is operated by the rod c, connected With the wrist-pin at c, which is vfurnished with a crank, as indicated. The reciprocation ofthe valve mechanism also, in the present 1nstance, serves to operate the condenser-pump devices which are connected therewith.

F indicates a steering-rudder constructed to serve as a condenser for the engine. Said rndder preferably consists of a series of pipes disposed closely adjacent to cach other in a flat coil and connected with a tubular standard, F', which is pivotcd and supported upon a baekwardlyextending arm, A', at the lower end of the frame A.

The tube E2, which carries the enginevalve, serves as the exhaust-pipe,and extends downward within the tubular standard F to near the bottom thereof, where it is provided with a valve, W'ithin said tube Eand connected therewith at its upper and lower ends, is a tube or pipe, G, of smaller diameter, which extends up through theengine-valve and valvebox cap into a paekingcoupling, J, by which the feed-supply pipe ofthe boiler or generator is connected thereto. The tube E2 is perforated between t-he valve-slides, as at a, so that the exhauststealn from the cylinder can pass ICO i tube E2.

The tubular standard F is provided with a into and down` said tube, around the pipe G, and is also perforated to allow steam to pass out into the top pipe, f, ofthe ruddercoil F. The lower pipe, f', of therudder-coil connects with the interior of the tubular standard, and the passage is provided with a valve, I, which serves,in connection with the valve i, as a condenser-pump,as the tubes El and G are reciprocated by the action of the rod e. Suitable packing or stuffing boxes are provided for the tubes at m, m', and m2, as indicated.

The water condensed from the steam in the ruddencoil is, by the `reciprocating action o'f the tubes,pumped up through the inner tube, G, 'and returned into the boiler M. Said tube serves also as a feed-water heater, by its bcing surrounded by exhaust-steam within the suitable tiller or yoke, I-I, fixed to its upper end, to which steering-ropes are to be connected for swinging the rudder to one side or the other when steering the boat.

For attaching'the engine-supporting frame` or auxiliary stern-post A to the boat,I employ a detachable clamping device, which device is preferably constructed as shown in Fig. l, and consists of a screw-threaded clamp, K, having an arm, I{,'through which a set-screw, K2, is arranged. Said arm K is arranged to hook over the stern of the boat B, and is secured by turning down the screw K2, thus drawing the frame A against the stern of the boat withsufficient force to return it in posi-y ton. Adjustment for diffe'ent thickness of timber in the boat is afforded by screwing the clamp K more or less into the frame.

Ears Z, having holes for bolts, are formed on theuframe A, and, if preferred, said frame can be attached to the boat by bolts or screws instead of the clamp K. This latter method of fastening may be deemed preferable,eXcept in cases where it is not desired in any way to deface or make holes in the stern of the boat.

The frame A is preferably formed hollow, as at a., and the internal cavityutilized as a receptacle for liquid fuel for use in generating the steam or vapor, or for running the engine, proper connection being made for withdrawing said fuel from the cavity by means of a wick or a pipe extending into the cavity.

The engine, propeller, and steering devices, arranged as herein shown, are compact, light, and portable, and can be put onto or taken off from an ordinary row-boat at pleasure, so that a single apparatus will serve for different boats, to be used when required. The mech anism in a size suitable for an ordinary rowboat is sufliciently light to be carried by a man without inconvenience, and can be readily fixed in position for use upon the boat. Larger sizes of the apparatus may be made for use on canal-boats or other vessels, when desired.

By constructingthe rudder as a condenser and arranging the reciprocating tube E2 as the i exhaustpipe for the engine and as a rod for operating the steam-valves and pump-valves,

and with the feed-tube disposed within said exhaust-pipe, I am enabled to produce a very light and simple condensing-engine, capable l of giving high efficiency of vacuum, while the same is in compact, convenient, and desirable form for portability and use, in the connection and for the purposes specified.

In the present instance I have illustrated a verticallyreciprocating 4engine to be operated by steam or expansive vapor; but it will be understood that van explosive-gas engine or hydrocarbon-engine or a rotary steam-engine could be employed for use in connection with the auxiliary stern-post or hollow detachable frame A of the form shown in accordance with my invention, and I desire to include such as within the scope of my claim.

It will be further understood that the feature of myinvention, comprising the steeringrudder constructed to serve as a condenser, and provided with pumping mechanism for removing the water from the interior thereof, may be employed in connection with an engine of other style from the one herein illustratedas, for instance, with a rotary engine or with an engine disposed' in horizontal or other position; also, that said rudder, instead of being formed of a series of pipes, may be made of platesv and partitions disposed for inclosing an interior space, into which the steam or vapor is delivered, the said space communicating with the exhaust and pump tubes in substan- 4the stern of a boat. I- do not therefore herein IOO make claim, broadly, to a detachable propelling mechanism; but such patented mechanism is, so far as appears, differently constructed and adapted to be operated by different means from that herein illustrated and described.

I am also aware that in a previous patent a condenser has been shown placed within the supporting-frame ofa ships propeller. Such construction, however, is not similar to my steering-rudder, as it docs not include pumping mechanism or means combined therewith for removing the water of condensation from the interior of the rudder.v n

What I rclaim as of my invention, and desire to secure by Letters Patent, isn

'1. 'A portable propelling apparatus for boats,

`consisting` of the auXiliarystern-post frame adapted to be temporarily and detachably secured in stationary position to the stern of the boat and provided with a steam-motor engine,

and a screw propeller-wheel mounted upon said frame with operating connections, substantially as and for the purpose set forth.

2. The combination of a steam-motor engine and a screw propeller-wheel operated by said engine, mounted upon a portable auxiliary stern-post provided with attaching devices,

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whereby it can be detaehably connected in stationary position on the stern of the boat, and a steering-rudder mounted to swing on said auxiliary stern-post, substantially as and for the purpose set forth.

3. The detachable stationary auxiliary sternpost A, having the backwardly-extended arm A', axis-stud, and cross 7 head guides a, combined with the propellerfwheel G, the laterally-swinging steering-mulder pivoted to said arm, and the motor-engine mounted on the upper end of said post, substantially as shown and described. I

Li. The combination, with a boat, oftheauxiliary stern-post A, having guides a, and a backwardly-projecting axis stud nearits lower end, the propeller-wheel C, mounted to rotate on said stud and provided with a crank, c, the engine cylinder D, and valve-box E, mounted on the upper end of said post, and the operating-rods D2 and c, connecting the propeller-4 erank with the engine-piston and valve mechanism, and means, substantially as described, for attaching said post to the stern of the boat and supporting the same with the propellerstud at stationary position axially in li nc therewith.

5. A steering-rudder constructed with an interior space or passage adapted to serve as a condenser and provided with a tubular standard, in combination with a pumping mechanism for removing the water of condensation, snbstantiall y as set forth.

G. The combination, with a boat, of a detachable auxiliary stern-post, a screw propeller-wheel and a driving-engine mounted on said post, a tubular steering-mulder connected with the exhaust-ports of said engine, and a pumping mechanism for removing the water of condensation from the interior of said rudder, substantially as set forth.

7. The steering-rudder constructed with au interior space or passage to serve as a condenser, provided with a double hollow tubular standard, in combination with a propellerwheel disposed in front of said standard, an engine,a supporting-framehaving the bearingarm A', for supporting the foot of said standard, means for supporting the top of the inner standard-tube, andthe yoke H, for shifting the rudder, substantially as and for the purpose set forth.

8. The combination, with the engine and the steering-mulder adapted to serve as a condcnser, of a pump disposed within the rudderstandard for drawing the water of condensation from within the rudder, substantially as set forth.

9. The combination of the engine, the combined rudder and condenser having an upright tubular standard, the reciprocating tube arranged within said standard and provided at one end with the engine-valve E and at the other end with the pump-valve fi, and the water-delivery 'pipe G, arranged through said tube, as set forth, to serve as a feedwater heater, substantially as set forth.

l0. The combination, with the detachable stern-post or frame, carrying the engine, the propellcr-wheei,and steering apparatus, of the adj ustable clamp, asK,havi ng a screw-threaded shank fitted to a Correspondingly-threaded opening in the frame and provided with a set-screw, K, substantially as and for the purpose set forth.

1l. The combination, with the engine and its operating connections,ofthe condenser-rudder having the tubular standard, the perforated tube E2, carrying the engine-valves E, fitted within said standard and serving as the exhaust-pipe for conveying exhaust-steam to said condenser, andas ahinging-snpport therefor, the feed-water pipe arranged Within and connected at its ends with said exhaust-tube and passing up through thc valve-chamber, the pump valves l y, and means for imparting reciprocating action to said valve-tube and feed-pipe, substantially as set forth.

12. A frame or auxiliary stern-post, A, for supporting the propeller and engine, provided with a hollow or cavity, as a, for containing liquid fuel, substantially as set forth.

Vitness my hand this 22d day of November, A. D. 1886.

S. EMERSON IIARTHAN.

Titnessesz Crus. H. BURLEIGH, ELLA P. BLnNUs. 

